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Foundations
easy
0:00.0
Evaluate
\ac
a
+
b
a
−
b
\ac{a+b}{a-b}
\ac
a
+
b
a
−
b
if
a
=
5
a = 5
a
=
5
and
b
=
3
b = 3
b
=
3
.
A
4
B
8
C
2
D
1
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